Means for truing aligned bearings



J. GREVEN. MEANS FOR TRUING ALIGNED BEARINGS.

APPLICATION FILED OCT. 28, 1920. RENEWED sums. 1922.

1,43%004 Patented Oct. 31, 1922.

4 SHEETS-SHEET I.

Mmwffi @741 a My J. GREVEN.

MEANS FOR TRUING ALIGNED BEARINGS.

APPLICATION FILED ocr. 28, 1920. RENEWED SEPT. 5, I922.

Patented Oct. 31, 1922.

4 SHEETSS HEET 2.

F IO.

-V Ill J. GREVEN.

MEANS FOR TRUINGALIGNED BEARINGS.

APPLICATION FILED OCT-28.1920. RENEWED SEPT. 5. 1922.

IASQOM. I Patented Oct. 31, 1922.

4 SHEETSSHEET 3.

1 5/ z If E 1 1-. GREVEN.

MEANS FOR TRUING ALIGNED BEARINGS.

APPLICATION FILED OCT. 28. 1920. RENEWEDSEPTJ, 1922.

Patented Oct. 311, 1922.

4 SHEETS-SHEET 4.

| I I I I .1

ilmilLllEiBlIuu .452 Men Z102.

- To all whom it may concern:

JOSEPH G-REVEN, OF CHICAGO, ILLINOIS.

MEANS FOR TRUING ALIGNEJD BEARINGS.

Application filed @etober 28,1920, Serial No. 420,116. Renewed September 5, 1922. Serial No. 586,355.

Be it known that I, Josnrrr GREVEN, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Means for Truing Aligned Bearings, of which the following is a specification.

My invention relates to means for truing aligned bearings and it has for its principal object the provision of new and improved means for effecting mechanically the necessary scraping of a plurality of white metal bearings aligned in working position in a machine frame for insuring a proper revoluble support for a shaft.

' Other objects will appear hereinafter.

The invention consists in the combinations and arranger" nts of parts hereinafter described and claimed,

The invention will be best understood by reference to the accompanying drawings forming a partof this specification, and in which,

Fig. l is a top plan view of my im roved mechanism, and showing in'dotted ines a frame provided with a plurality of bearings upon which work is to be done";

Fig. 2 is an enlarged detail view, being substantially a section taken on line 2-2 of Fig. 1;

Fig. 3 is an enlarged detail view, being a section taken on line 3-3 of Fig. 1;

Fig. 4 is a face view of the driving mechanism, but with the driving pulley removed and with the parts at a different angle from that of the showing of Fig. 1;

Fig. 5 isa central vertical section, being taken substantially on line 5--5 of Fig. 4;

Figs. 6, 7 and 8 are detailed sideviews of elements of my improved mechanism;

Fig. 9 is atop plan view of one of the brackets by which the boring bar of my mechanism is held in position;

Fig. 10 is an end view of the structure shown in Fig. 9 as seen from the left in said figure;

F ig. 11 is an end view of the structure shown in Fig. 9 as seen from the right in said figure;

Fig. 12 is an enlarged detail view, being substantially a section taken at line 12-12 of Fig. 9;

Fig. 13 is an enlarged detail View, being substantially a section taken at line 13-13 of Fig. 9;

Fig. 14: is an endview of the connecting rod shown in Fig. 13 as seen from the left in said figure;

Fig. 15 is a face view of the plate shown in Fig. 11 but with the co-operating parts removed therefrom; and

Fig. 16 is a diagrammatical view showing the method of driving the operating parts.

Referring to the drawings, 29 indicates a machine frame provided with a plurality'of semi-cylindrical bearings 21 which are mounted in alignment with each other and which are to be scraped for perfecting the alignment for the roper working support of a straight shaf t In the construction shown, the frame 20 is in the form of the cover plate forming a part of the axle housing of an automobile engine, the bearings 21 being the ordinary brass bearings provided with facings of Babbitt or other suitable bearing metal.

A plurality of brackets 22 are used adjustably mounted upon the frame 20 by means of clips 23 which are held in position by bolts 24 as is best shown in Fig. 10. The brackets 22 are so arranged with respect to the frame with which they are to be used as to insure that the working parts carried by the bracket as hereinafter described may be adjusted to the desired position with respect to the axis about which bearings 21 are aligned.

As is clearly shown in Fig. 10, each of the brackets 22 is provided with a plurality of bearing plates 25 slidably mounted thereon in radially adjustable positions, being adapted to be held in adjusted position by means of machine screws 26 working in slots 27 of the bearing plates 25. The adjustment of the bearing plates 25 is fur-' ther controlled by means of set-screws 28 which are mounted in the bracket and bear at their inner ends against the outer ends of the bearing plates. As is best shown in said Fig. 10, a shaft or bar 29 is held in position upon the frame 20 by means of the brackets 22, the bearing plates 25 being adjustable for controlling to a nicety the position of the shaft for centering the shaft to bring its axis to correspond exactly with the axis of the bearings 21. The bearing plates 25 are to be adjusted with respect to the shaft or bar 29 so that the shaft is free to rotate and is free to move longitudinally with respect to such plates, but is held very upon oneend of the bar in position to. mesh with a gear 31 carried by the frame 20, the gear 31'being adapted to mesh with a suitable driving gear carried by the shaft to be supported by the bearings 21. As will be readily understood, by providing upon the bar 29 a gear of the same type as that later to mesh with the gear 31, I am afforded a guide for determining roughly the position of the axis of the bearings 21. In the construction shown, the gear 30 is secured upon the bar 29 by means of a tapered bearing sleeve 32 (see Fig. 3), the sleeve 32 being I split at intervals thereabout to permit the gear 30 to be forced accurately into position upon the bar, the gear being held in position by means of a nut 33.

I For effecting the desired scraping operation for bringing about the desired accurate sizing and centering of the bearings 21, I

have provided a plurality of cutting tools 34 which are mounted in sockets 35 bored in the side of the bar 29 at suitable intervals.

As is best shown in Fig. 1, the cutting tools 34 are preferably arranged in staggered relation about the axis of the bar 29. As is.

best shown in Fig. 2 each of the cutting tools 34 is adjustable radially with respect to the bar 29 by means of set-screws 36 and 37 which engage oppositely disposed diagonal portions of the tool. As will be readily understood, by loosening one of the screws and tightening the other the cutting tool 34 can be adjusted to precisely the desired posi- 7 the bar 29 is adapted to be rotated by means of a pulley 38 which is fixedly mounted upon one end of the bar 29 (see Fig. 16). The pulley 38 is then connected by means of an endless belt 39 with a driving pulley 40 which is feathered upon a driving shaft ,41.

. the arrangement being such that as the bar v29 shifts longitudinally as hereinafter described the pulley 40 is adapted to shift along the driving shaft 41 so as to. remain continuously in an operative driving position with respect to the pulley 38. In the construction shown the pulley 38 is provided with handle 42 for manual operation of the bar 29 when desired.

Means is provided for shifting the bar 39 longitudinally with respect to the frame 20 so as to carry the cutting tools 34 very slowly toward the left in Fig. 1 as the rotation of the bar continues. In the construction shown this means comprises a sleeve 43 revolubly mounted upon the bar 29 but held against moving longitudinally with respect thereto. Means is provided as hereinafter described for rotating the sleeve 43 with respect to the bar 29, in the construction shown, sleeve 43 being driven from the shaft 29. The sleeve 43 is screw-threaded on its outer face and means is provided adapted by'co-operation with the screw threads of the sleeve to move the sleeve longitudinally as it rotates for giving the bar 29 the desired longitudinal movement. This means comprises a bracket 44 which is fixedly mounted upon the ends of rods45 carried by one of the brackets 22. The rods 45 are adjustably mounted upon the bracket 22 by means of plates 46 which in the construction shown are formed integrally with the rods. Each of the plates 46 is provided with a plurality of slots 47 (see Figs. 13 and 14) by which said plates are adjustably secured in position by the use of machine screws 48. By this construction the bracket 44 is adjustable with respect to the bracket 22 by which it is held in position. As is best shown in Fig. 15, the bracket 44 is further abjustable by reason of the provision of slotted openings 49 in the-bracket 44 for the ends of the rods 45. Operative connection is provided between the bracket 44 and the screw-threaded sleeve 43 by the use of a plurality of bearing plates 50 which are radially adjustable along slideways 51 of the bracket 44,-

as is best showtn in Fig. 15. Ea h of the bearing plates 50 is held in position by means of a machine screw 52 passing through a radially extending slot 53 therein. The hearing plates 50 are screw-threaded upontheir inner ends as isbest shown in Fig. 13 so as to engage the screw threads of the sleeve 43 for effecting a longitudinal movement of said sleeve.

The means for rotating the sleeve 43 from the bar 29 comprises a pinion 54 which is secured by means of a set-screw 55 upon one end of the bar 29 adjacent to the end of the sleeve 43. Meshing with the pinion 54 there is a gear 56 fixedly mounted upon a sleeve 57 which is journaled in a suitable bearing in a plate 58 revolubly mounted upon one end of the sleeve 43. The plate 58 is held against rotary movement about the bar 29 by means of a rod 59 extending through the sleeve 57 and engaging a notch 60 in the bracket 44 at the upper side thereof, The sleeve '57 has formed integrally therewith a pinion 61,-with which meshes a gear 62 fixedly mounted upon the sleeve 43. The plate 58 is provided at its outer edge with a flange 63 extending about the gearing above described. In the construction shown the gearing connecting the shaft 29 with the sleeve 43 is adapted to reduce the speed of rotation by a ratio of approximately 9 to 1, and the threads upon the sleeve 43 are designed to be preferably sixty to an inch. It is evident accordingly that the cutting tools 34 are given betwee five hundred and six hundred revolutions for each inch of movement longitudinally of the bar, It is accordingly apparent that in the use of my apparatus very accurate results may be obtained inasmuch as an exceedingly light cut is made by each of the cutting tools 34 at each revolution. Inasmuch as the tools 34 are working in soft metal and with a very-slow rate of advance as above described, the bearings 21 are adapted .to be scraped with exceedingly great accuracy, the strength and stifi'ness of the bar 29 being sufficient to prevent any tendency for the bar to give laterally.

While I have illustrated and described the preferred form of construction forcarrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. 1, therefore, do not wish to be limited to the precise details of the construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination of a bar, means for mounting said bar revolubly in centered position with respect to a plurality of substantially aligned bearings fixed in a machine frame, cutting tools carried by said bar ad- 'jacent to said bearings respectively, means for'rotating said bar, a screw-threaded member revolubly mounted with respect to said bar, means for driving said-member from said bar, andmeans radially disposed about said screw-threaded member adapted by engagement therewith to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment of the bearings. substantially as described. 7

2. The combination of a bar, means for mounting said bar revolubly in centered position with respect to a plurality of substantially aligned bearings fixed in a machine frame, cutting tools carried by said bar adjacent to said bearings respectively. means for rotating said bar. a screw-threaded member revolubly mounted with respect to said bar, means for driving said member from said bar. and an adjustable bracket mounted on said machine frame and provided with radially disposed screw-threaded part adapted by engagement with the screw threads of said member to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment oi the bearings, substantially as described.

3. The combination of a bar. means for mounting said bar revolubly in centered position with respect to a plurality of substantially aligned bearings fixed in a 'machine frame, cutting tools carried by said bar adjacentto said bearings respectively. means for rotating said bar, a screw-threaded memberrevolubly mounted with respect to said bar, means for driving said member from said bar, a bracket fixedly mounted on said machine frame. and a plurality of radially adjustable bearing plates carried by said bracketand screw-threaded on their inner ends adapted by engagement with the screw threads of said member to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment of the bearings, substantially as described.

4. The combination of a bar, means for mounting said bar revolubly in centered position with respect to a plurality ofsubstantially aligned bearings fixed in a machine frame, cutting tools carried by said bar adjacent to said bearings respectively, means for rotating said bar, a sleeve revolubly mounted on said bar but held against longitudinal movement with respect thereto, a plate revolubly mounted with respect to said sleeve, means for holding said plate against rotary movement, gearing mounted on said plate and connecting said sleeve with said bar, screw threads on the outer face of said sleeve, and means fixedly mounted on said frame adapted by engagement with said screw threads to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment of the bearings, substantially as described.

5. The combination of a bar, a plurality of brackets, means for securing said brackets in fixed position upon a machine frame in spaced relation thereon substantially in alignment with respect to a plurality of bearings fixed on the frame. means for giving said bar a snug revoluble mounting on said brackets in centered position with respect to said bearings, cutting tools carried by said bar adjacent to said bearings respectively, a screw-threaded member revolubly mounted with respect to said bar, and held against longitudinal movement with respect thereto, means for rotating said bar. means actuated by the rotation of said bar for rotating said member, and means carried by one of said brackets adapted by cooperation with said screw-threaded member said brackets in centered position with respect to said bearings, cutting tools carried by said bar adjacent to said bearings respectively, a sleeve revolubly mounted on said bar but held against movement longitudinally with respect thereto, means for rotating the bar, gearing connecting said sleeve with said bar, screw threads on the outer face of said sleeve, a bracket fixedly connected with one of said first named brackets, and a plurality of radially adjustable'bearing plates carried by said last mentioned bracket and screw-threaded on their inner ends adapted by engagement with the screw threads of said sleeve to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment of the bearings, substantially as described.

7. The combination of a bar; means for mounting said bar revolubly in centered position with respect to a plurality of substantially aligned bearings fixed in a machine frame; cutting elements carried by said bar; means for rotating said bar; a screw threaded sleeve revolubly mounted with respect to said bar; a bracket -mounted on one of said mounting means; a flanged plate mounted on said screw threaded sleeve; means mounted on said plate and engaging said bracket for holding said plate against rotarymovement"; a plurality of adjustable members carried by said bracket and screw threaded on their inner ends adapted by engagement with said screw-threaded sleeve to move the-said bar longitudinally for carrying said cutting elements in operative engagement with said bearings for truing the alignment of the said bearings, substantially as descrlbed.

8. The combination of a bar, a plurality of brackets, means for securing said brackets in fixed position upon a machine frame in spaced relation thereon substantially in alignment with respect to a plurality of bearings fixed on the frame, means for giving said bar a snug revoluble mounting on said brackets in centered position with respect to said bearings, cutting tools carried by said bar adjacent to said bearings respectively, a screw-threaded member revolubly mounted with respect to said bar, and held against longitudinal movement with respect thereto, means for rotating said bar, means actuated by the rotation of said bar for rotating said member, an adjustable bracket mounted on one of said brackets; and adjustable means carried by said bracket adapted by co-operation with said screw-threaded member for moving the bar longitudinally for carrying the cutting elements into operative engagement with the bearings for truing the alignment of the said bearings, substantially as described.

9/ The combination of a bar, a plurality of brackets, means for securing said brackets in fixed position upon a machine frame in spaced relation thereon substantially in alignment with respect to a plurality of bearings fixed on the frame, means for giving said bar a snug revoluble mounting on said brackets in centered position with respect to said bearings, cutting toolscarried by said bar adjacent to said'bearings respectively, a screw-threaded member revolubly mounted with respect to said bar, and held against longitudinal movement with respect thereto, means for rotating said bar, means actuated by the rotation of said bar for rotating said member, an adjustable bracket mounted on one of said brackets; a plate mounted on said sleeve member; a laterally extending arm carried by said plate and engaging said adjustable bracket, holding said plate against rotary movement; and a plurality of radially extending plates carried by said. bracket and screw-threaded on their inner ends, adapted by engagement with said screw-threaded member to move the bar longitudinally for carrying said cutting tools into operative engagement with said bearings for truing the alignment of the said bearings, substantially as described.

10. A boring machine of the class described, comprising the plurality of brackets removably mounted on the frame of a machine; a longitudinally removable boring barrevolubly mounted on said brackets substantially in alignment with respect to a plurality of hearings on said frame; cutting elements imbedded in said bar and v projectinglatera-lly therefrom; means for rotating said bar; a bracket mounted on one of the foresaid brackets; a screwthreaded sleeve mounted on said bar; means for rotating said sleeve by a rotary movement of said bar; a plate mounted on one end of said screw threaded sleeve; a laterally extending arm mounted on said plate and slidably engaging a slot-in said second mentioned bracket for holding said plate against rotary movement; and radially adjustable plates mounted on said second mentioned bracket and screw-threaded on their engaging faces adapted by engagement with said screw-threaded sleeve to move the said bar longitudinallyfor carrying said cutting tools in operative engagement with said bearings for truing the alignment of the said bearing, substantially asidescribed. I

11. In combination with a machine frame having a plurality of substantially aligned bearings; cutting means revolubly mounted on said frame adjacent to said bearings respectively; a drive member revolubly mounted with respect to said cutting means; and radially extending adjustable means disposed about said member adapted by en gagement therewith to move said cutting means into operative engagement with said bearings for truing the alignment of the bearings, substantially as described.

12. The combination with a plurality of substantially aligned bearings fixedly mounted in a machine frame, of a rotatable boring bar removably mounted on. said frame and operatively engaging said bearings; means for rotating said bar; and adjustable means projecting into contact withsaid bar for moving the bar into operative engagement with said bearings, substantially as described. I

13. The combination with a. plurality of substantially aligned bearings fixedly mounted in a machine frame, of a rotatable boring bar removably mounted on said frame; cutting elements adj ustably mounted on said bar adjacent to said'bearings respectively; a screw-threaded member revolu bly mounted withrespec-t to said bar; and Y radially adjustable screw-threaded bearings disposed'about said member adapted upon engagement therewith to move said cutting elements into operative engagement with said bearings for truing the alignment of the cutting elements into operative engagement with said bearings, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH GREVEN.

iWitnesses:

JosHUA R. H. Po'rrs, B. G. RICHARDS. 

